首页> 中文期刊> 《河北农业大学学报》 >结球甘蓝-大白菜异源三倍体与结球甘蓝回交获得初级三体的研究

结球甘蓝-大白菜异源三倍体与结球甘蓝回交获得初级三体的研究

         

摘要

In this study, an aneuploid plant with 2n + l chromosome was obtained from the progeny of cabbage-Chinese cabbage allotriploid backcrossing with cabbage. Cytological and SSR analysis showed that the aneuploid plant was a primary trisomic - 8 of cabbage. Furthermore, the chromosome number of the self ing and backcrossing progenies of the primary triso-mic-8 plant was identified, and the transfer rate of female and male gametes of extra-chromosome was clarified as 34. 74% and 6. 17%, respectively.%采用结球甘蓝-大白菜异源三倍体与二倍体结球甘蓝回交的方式,从回交后代BC2中获得了1株2n+1非整倍体植株.经细胞学和SSR鉴定分析,确认该2n+1植株为结球甘蓝8号初级三体.通过对8号初级三体植株自交和回交后代染色体数目的测定,明确了其额外染色体雌、雄配子的传递率分别为34.74%和6.17%.

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